Built 2026-10-18 (18 October 2026)

Osawatomie Weather Records (USC00146084)

Record envelope, standing records and threshold days for Osawatomie (USC00146084), Kansas, United States, with 83 years of record.

Key Facts for Osawatomie

  • Osawatomie (USC00146084) is a weather station in Kansas, United States at 38.50 latitude and -94.94 longitude, 262 m (861 ft) above sea level.
  • The station reports from 1944 to 2026, 83 years of record.
  • 1,464 records set at Osawatomie still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Osawatomie set a daily record precipitation of 73.7 mm (2.9 in) on 10 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Kansas, United States, 38.50 latitude, -94.94 longitude.
  • Elevation: 262 m (861 ft).
  • Period of record: 1944 to 2026, 83 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

10 days at or beyond a record
Daily record high and record low at Osawatomie, with 2026 drawn through them The band shows the record high and record low for each calendar day at Osawatomie. The lines show the 2026 daily maximum and minimum. 10 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Osawatomie. The lines show the 2026 daily maximum and minimum. 10 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Osawatomie, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan23.9 C (75.0 F)-26.7 C (-16.1 F)18.3 C (64.9 F)-19.4 C (-2.9 F)
Feb27.2 C (81.0 F)-28.3 C (-18.9 F)22.8 C (73.0 F)-9.4 C (15.1 F)
Mar34.4 C (93.9 F)-19.4 C (-2.9 F)34.4 C (93.9 F)-9.4 C (15.1 F)
Apr33.3 C (91.9 F)-8.3 C (17.1 F)30.0 C (86.0 F)2.2 C (36.0 F)
May35.6 C (96.1 F)-0.6 C (30.9 F)29.4 C (84.9 F)14.4 C (57.9 F)
Jun40.0 C (104.0 F)7.2 C (45.0 F)33.3 C (91.9 F)13.9 C (57.0 F)
Jul46.1 C (115.0 F)8.9 C (48.0 F)37.2 C (99.0 F)18.9 C (66.0 F)
Aug43.9 C (111.0 F)8.3 C (46.9 F)36.1 C (97.0 F)16.7 C (62.1 F)
Sep40.0 C (104.0 F)1.7 C (35.1 F)37.2 C (99.0 F)12.2 C (54.0 F)
Oct33.9 C (93.0 F)-6.7 C (19.9 F)32.2 C (90.0 F)8.3 C (46.9 F)
Nov27.8 C (82.0 F)-17.8 C (0.0 F)n/an/a
Dec22.8 C (73.0 F)-20.6 C (-5.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Osawatomie by the year they were set 1,464 records at Osawatomie still stand. 1954 holds the most, with 117. 0501001501951: 421952: 911953: 951954: 1171955: 861956: 811957: 491958: 631959: 631960: 501976: 131981: 72011: 802012: 842013: 752014: 822015: 492016: 232017: 462018: 562019: 382020: 442021: 292023: 232024: 232025: 332026: 22195119541957196020112014201720202024
1,464 records at Osawatomie still stand. 1954 holds the most, with 117.
Standing records at Osawatomie by the year they were set
Year setStanding records
195142
195291
195395
1954117
195586
195681
195749
195863
195963
196050
197613
19817
201180
201284
201375
201482
201549
201623
201746
201856
201938
202044
202129
202323
202423
202533
202622

Wettest Day of Each Month

Jun: 177.8 mm (7.0 in)
Record daily precipitation for each month at Osawatomie The wettest day on record for each calendar month at Osawatomie. The most was 177.8 mm (7.0 in) on 11 June 1981. 050100150200 Jan: 52.6 mm (2.1 in), 2 January 1965 Jan Feb: 69.9 mm (2.8 in), 21 February 1997 Feb Mar: 114.0 mm (4.5 in), 5 March 2004 Mar Apr: 85.1 mm (3.4 in), 27 April 2009 Apr May: 114.3 mm (4.5 in), 26 May 1991 May Jun: 177.8 mm (7.0 in), 11 June 1981 Jun Jul: 177.8 mm (7.0 in), 11 July 1958 Jul Aug: 142.2 mm (5.6 in), 22 August 2017 Aug Sep: 142.7 mm (5.6 in), 13 September 1961 Sep Oct: 106.9 mm (4.2 in), 11 October 1973 Oct Nov: 107.4 mm (4.2 in), 15 November 1985 Nov Dec: 63.5 mm (2.5 in), 15 December 1971 Dec
The wettest day on record for each calendar month at Osawatomie. The most was 177.8 mm (7.0 in) on 11 June 1981.
Record daily precipitation for each month at Osawatomie
MonthRecord daily precipitation (mm)Date
Jan52.6 mm (2.1 in)2 January 1965
Feb69.9 mm (2.8 in)21 February 1997
Mar114.0 mm (4.5 in)5 March 2004
Apr85.1 mm (3.4 in)27 April 2009
May114.3 mm (4.5 in)26 May 1991
Jun177.8 mm (7.0 in)11 June 1981
Jul177.8 mm (7.0 in)11 July 1958
Aug142.2 mm (5.6 in)22 August 2017
Sep142.7 mm (5.6 in)13 September 1961
Oct106.9 mm (4.2 in)11 October 1973
Nov107.4 mm (4.2 in)15 November 1985
Dec63.5 mm (2.5 in)15 December 1971

Period of Record Coverage

1951 to 2026
Days with data per year at Osawatomie 27 years of record at Osawatomie, 1951 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1951, 1960, 1976, 1981, 2016, 2017, 2018, 2019 and others. 1951: 188 of 365 days1952: 360 of 366 days1953: 364 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 365 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 167 of 366 days1976: 60 of 366 days1981: 30 of 365 days2011: 364 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 355 of 365 days2015: 350 of 365 days2016: 271 of 366 days2017: 274 of 365 days2018: 301 of 365 days2019: 297 of 365 days2020: 356 of 366 days2021: 170 of 365 days2023: 154 of 365 days2024: 178 of 366 days2025: 190 of 365 days2026: 95 of 365 days19551960201520202025
27 years of record at Osawatomie, 1951 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1951, 1960, 1976, 1981, 2016, 2017, 2018, 2019 and others.
Days with data per year at Osawatomie
YearDays with dataShare of yearComplete
195118852%No
195236098%Yes
1953364100%Yes
1954365100%Yes
1955365100%Yes
1956365100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
196016746%No
19766016%No
1981308%No
2011364100%Yes
2012366100%Yes
2013365100%Yes
201435597%Yes
201535096%Yes
201627174%No
201727475%No
201830182%No
201929781%No
202035697%Yes
202117047%No
202315442%No
202417849%No
202519052%No
20269526%No

Latest Records

20
Latest records at Osawatomie
DateStationRecordValueBeat old record byOld record stoodSignificance
10 September 2026Osawatomie, USdaily rain (Provisional)73.7 mm (2.9 in)47.0 mm (1.9 in)56 years48 of 100 (Notable)
19 May 2026Osawatomie, USdaily rain64.3 mm (2.5 in)26.2 mm (1.0 in)76 years47 of 100 (Notable)
2 April 2026Osawatomie, USdaily rain48.5 mm (1.9 in)4.0 mm (0.16 in)37 years21 of 100 (Routine)
7 March 2026Osawatomie, USdaily rain25.4 mm (1.0 in)8.4 mm (0.33 in)52 years29 of 100 (Routine)
27 January 2026Osawatomie, USdaily snow depth7.6 cm (3.0 in)2.5 cm (1.0 in)78 years20 of 100 (Routine)
26 January 2026Osawatomie, USdaily snow depth7.6 cm (3.0 in)2.5 cm (1.0 in)78 years20 of 100 (Routine)
25 January 2026Osawatomie, USdaily snowfall8.9 cm (3.5 in)3.8 cm (1.5 in)70 years37 of 100 (Notable)
9 January 2026Osawatomie, USdaily rain29.2 mm (1.1 in)11.2 mm (0.4 in)80 years44 of 100 (Notable)
2 December 2025Osawatomie, USdaily snowfall1.3 cm (0.5 in)1.3 cm (0.5 in)80 years20 of 100 (Routine)
19 September 2025Osawatomie, USdaily rain28.2 mm (1.1 in)1.8 mm (0.07 in)23 years14 of 100 (Routine)
11 August 2025Osawatomie, USdaily rain61.5 mm (2.4 in)23.9 mm (0.9 in)6 years22 of 100 (Routine)
20 April 2025Osawatomie, USdaily rain40.6 mm (1.6 in)13.9 mm (0.5 in)22 years24 of 100 (Routine)
18 April 2025Osawatomie, USdaily rain49.0 mm (1.9 in)12.2 mm (0.5 in)48 years30 of 100 (Routine)
5 March 2025Osawatomie, USdaily snowfall4.3 cm (1.7 in)1.8 cm (0.7 in)76 years20 of 100 (Routine)
19 February 2025Osawatomie, USdaily snowfall8.9 cm (3.5 in)8.9 cm (3.5 in)80 years46 of 100 (Notable)
19 February 2025Osawatomie, USdaily snow depth10.2 cm (4.0 in)10.2 cm (4.0 in)80 years46 of 100 (Notable)
18 February 2025Osawatomie, USdaily snowfall1.3 cm (0.5 in)1.3 cm (0.5 in)80 years20 of 100 (Routine)
16 January 2025Osawatomie, USdaily snow depth12.7 cm (5.0 in)7.6 cm (3.0 in)15 years25 of 100 (Routine)
15 January 2025Osawatomie, USdaily snow depth20.3 cm (8.0 in)15.2 cm (6.0 in)15 years39 of 100 (Notable)
6 January 2025Osawatomie, USdaily rain15.2 mm (0.6 in)4.8 mm (0.19 in)70 years20 of 100 (Routine)

Climate Trend

14 complete years, 1952 to 2020
Annual mean temperature at Osawatomie as warming stripes, 1952 to 2020 One stripe for each of 14 complete years at Osawatomie, 1952 to 2020. Blue stripes are years cooler than the station's own mean of 13.4 C (56.1 F); red stripes are warmer. The coolest year was 2014, at 11.7 C (53.1 F), and the warmest was 1954, at 15.5 C (59.9 F). The strongest colour marks a difference of 2.2 C (4.0 F). 1952: 13.7 C, +0.4 C from the station mean1953: 15.0 C, +1.6 C from the station mean1954: 15.5 C, +2.1 C from the station mean1955: 14.0 C, +0.6 C from the station mean1956: 14.2 C, +0.8 C from the station mean1957: 12.5 C, -0.9 C from the station mean1958: 12.0 C, -1.4 C from the station mean1959: 12.4 C, -1.0 C from the station mean2011: 13.0 C, -0.4 C from the station mean2012: 15.0 C, +1.6 C from the station mean2013: 12.0 C, -1.4 C from the station mean2014: 11.7 C, -1.6 C from the station mean2015: 13.5 C, +0.1 C from the station mean2020: 12.8 C, -0.6 C from the station mean19521960197019801990200020102020
One stripe for each of 14 complete years at Osawatomie, 1952 to 2020. Blue stripes are years cooler than the station's own mean of 13.4 C (56.1 F); red stripes are warmer. The coolest year was 2014, at 11.7 C (53.1 F), and the warmest was 1954, at 15.5 C (59.9 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Osawatomie as warming stripes, 1952 to 2020
YearAnnual mean temperatureDifference from the station mean
195213.7 C+0.37 C
195315.0 C+1.64 C
195415.5 C+2.15 C
195514.0 C+0.59 C
195614.2 C+0.78 C
195712.5 C-0.91 C
195812.0 C-1.36 C
195912.4 C-1.02 C
201113.0 C-0.39 C
201215.0 C+1.65 C
201312.0 C-1.39 C
201411.7 C-1.63 C
201513.5 C+0.11 C
202012.8 C-0.59 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1944 to 2026
Yearly extremes at Osawatomie: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.1 C (115.0 F)195437.8 C (100.0 F)27
Coldest night (TNn)-28.3 C (-18.9 F)2021-19.4 C (-2.9 F)27
Wettest day (Rx1day)177.8 mm (7.0 in)195871.8 mm (2.8 in)82
Wettest five days (Rx5day)265.5 mm (10.5 in)2007111.3 mm (4.4 in)82
Longest dry spell (CDD)58 days195026 days82

Hottest day (TXx)

Hottest day (TXx) at Osawatomie by year The hottest day of the year at Osawatomie, 1944 to 2026. The record is 46.1 C (115.0 F) in 1954, marked on the chart; the median year is 37.8 C (100.0 F). 203040501960198020002020Record: 46.1 C (115.0 F) in 1954
The hottest day of the year at Osawatomie, 1944 to 2026. The record is 46.1 C (115.0 F) in 1954, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Osawatomie by year
YearHottest day (TXx)
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
195137.8 C (100.0 F)
195241.1 C (106.0 F)
195339.4 C (102.9 F)
195446.1 C (115.0 F)
195539.4 C (102.9 F)
195640.6 C (105.1 F)
195738.3 C (100.9 F)
195837.2 C (99.0 F)
195937.8 C (100.0 F)
196034.4 C (93.9 F)
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
197621.7 C (71.1 F)
1977n/a
1978n/a
1979n/a
1980n/a
198136.1 C (97.0 F)
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
201143.9 C (111.0 F)
201242.8 C (109.0 F)
201337.8 C (100.0 F)
201437.8 C (100.0 F)
201536.7 C (98.1 F)
201637.2 C (99.0 F)
201738.9 C (102.0 F)
201836.7 C (98.1 F)
201935.0 C (95.0 F)
202035.0 C (95.0 F)
202136.1 C (97.0 F)
202340.0 C (104.0 F)
202438.3 C (100.9 F)
202535.6 C (96.1 F)
202637.2 C (99.0 F)

Coldest night (TNn)

Coldest night (TNn) at Osawatomie by year The coldest night of the year at Osawatomie, 1944 to 2026. The record is -28.3 C (-18.9 F) in 2021, marked on the chart; the median year is -19.4 C (-2.9 F). -40-200201960198020002020Record: -28.3 C (-18.9 F) in 2021
The coldest night of the year at Osawatomie, 1944 to 2026. The record is -28.3 C (-18.9 F) in 2021, marked on the chart; the median year is -19.4 C (-2.9 F).
Coldest night (TNn) at Osawatomie by year
YearColdest night (TNn)
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951-19.4 C (-2.9 F)
1952-16.1 C (3.0 F)
1953-20.6 C (-5.1 F)
1954-20.6 C (-5.1 F)
1955-18.3 C (-0.9 F)
1956-19.4 C (-2.9 F)
1957-18.3 C (-0.9 F)
1958-19.4 C (-2.9 F)
1959-26.7 C (-16.1 F)
1960-19.4 C (-2.9 F)
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976-20.6 C (-5.1 F)
1977n/a
1978n/a
1979n/a
1980n/a
198113.9 C (57.0 F)
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011-25.6 C (-14.1 F)
2012-13.9 C (7.0 F)
2013-15.6 C (3.9 F)
2014-22.8 C (-9.0 F)
2015-16.1 C (3.0 F)
2016-16.1 C (3.0 F)
2017-18.3 C (-0.9 F)
2018-23.9 C (-11.0 F)
2019-13.9 C (7.0 F)
2020-18.9 C (-2.0 F)
2021-28.3 C (-18.9 F)
2023-3.9 C (25.0 F)
2024-22.2 C (-8.0 F)
2025-22.8 C (-9.0 F)
2026-19.4 C (-2.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Osawatomie by year The wettest day of the year at Osawatomie, 1944 to 2026. The record is 177.8 mm (7.0 in) in 1958, marked on the chart; the median year is 71.8 mm (2.8 in). 0501001502001960198020002020Record: 177.8 mm (7.0 in) in 1958
The wettest day of the year at Osawatomie, 1944 to 2026. The record is 177.8 mm (7.0 in) in 1958, marked on the chart; the median year is 71.8 mm (2.8 in).
Wettest day (Rx1day) at Osawatomie by year
YearWettest day (Rx1day)
194454.4 mm (2.1 in)
194580.3 mm (3.2 in)
1946103.4 mm (4.1 in)
194792.5 mm (3.6 in)
194872.9 mm (2.9 in)
194999.1 mm (3.9 in)
195086.4 mm (3.4 in)
195176.2 mm (3.0 in)
195259.7 mm (2.4 in)
195349.0 mm (1.9 in)
195468.6 mm (2.7 in)
195561.7 mm (2.4 in)
195657.2 mm (2.3 in)
195769.6 mm (2.7 in)
1958177.8 mm (7.0 in)
195944.7 mm (1.8 in)
196073.4 mm (2.9 in)
1961142.7 mm (5.6 in)
196233.0 mm (1.3 in)
196349.3 mm (1.9 in)
1964103.1 mm (4.1 in)
196595.8 mm (3.8 in)
196659.7 mm (2.4 in)
196753.8 mm (2.1 in)
196868.6 mm (2.7 in)
196960.5 mm (2.4 in)
197087.9 mm (3.5 in)
197163.5 mm (2.5 in)
197264.0 mm (2.5 in)
1973106.9 mm (4.2 in)
197445.7 mm (1.8 in)
197560.2 mm (2.4 in)
197650.8 mm (2.0 in)
197790.2 mm (3.6 in)
197886.9 mm (3.4 in)
197969.9 mm (2.8 in)
198067.8 mm (2.7 in)
1981177.8 mm (7.0 in)
198265.5 mm (2.6 in)
198343.2 mm (1.7 in)
198465.0 mm (2.6 in)
1985107.4 mm (4.2 in)
198679.0 mm (3.1 in)
198742.4 mm (1.7 in)
198861.0 mm (2.4 in)
198983.3 mm (3.3 in)
199057.9 mm (2.3 in)
1991114.3 mm (4.5 in)
199259.9 mm (2.4 in)
1993128.8 mm (5.1 in)
1994100.3 mm (3.9 in)
199558.4 mm (2.3 in)
199651.6 mm (2.0 in)
199777.0 mm (3.0 in)
1998108.7 mm (4.3 in)
199983.1 mm (3.3 in)
200047.8 mm (1.9 in)
200153.3 mm (2.1 in)
200239.1 mm (1.5 in)
200394.5 mm (3.7 in)
2004114.0 mm (4.5 in)
200596.0 mm (3.8 in)
200680.0 mm (3.1 in)
2007127.0 mm (5.0 in)
200874.2 mm (2.9 in)
2009147.3 mm (5.8 in)
201086.4 mm (3.4 in)
201152.6 mm (2.1 in)
201268.1 mm (2.7 in)
201370.6 mm (2.8 in)
201458.4 mm (2.3 in)
201586.4 mm (3.4 in)
201661.7 mm (2.4 in)
2017142.2 mm (5.6 in)
201894.5 mm (3.7 in)
2019106.7 mm (4.2 in)
202065.8 mm (2.6 in)
202166.0 mm (2.6 in)
202356.9 mm (2.2 in)
202477.5 mm (3.1 in)
202581.5 mm (3.2 in)
202673.7 mm (2.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Osawatomie by year The wettest five days of the year at Osawatomie, 1944 to 2026. The record is 265.5 mm (10.5 in) in 2007, marked on the chart; the median year is 111.3 mm (4.4 in). 01002003001960198020002020Record: 265.5 mm (10.5 in) in 2007
The wettest five days of the year at Osawatomie, 1944 to 2026. The record is 265.5 mm (10.5 in) in 2007, marked on the chart; the median year is 111.3 mm (4.4 in).
Wettest five days (Rx5day) at Osawatomie by year
YearWettest five days (Rx5day)
1944109.9 mm (4.3 in)
1945107.9 mm (4.2 in)
1946119.9 mm (4.7 in)
1947106.2 mm (4.2 in)
1948126.5 mm (5.0 in)
1949163.7 mm (6.4 in)
1950164.6 mm (6.5 in)
1951161.5 mm (6.4 in)
195281.9 mm (3.2 in)
195380.1 mm (3.2 in)
1954118.6 mm (4.7 in)
1955112.3 mm (4.4 in)
195689.5 mm (3.5 in)
195776.2 mm (3.0 in)
1958182.8 mm (7.2 in)
1959114.2 mm (4.5 in)
1960104.6 mm (4.1 in)
1961162.0 mm (6.4 in)
196277.5 mm (3.1 in)
196353.4 mm (2.1 in)
1964168.4 mm (6.6 in)
1965135.3 mm (5.3 in)
196686.1 mm (3.4 in)
1967108.7 mm (4.3 in)
1968135.0 mm (5.3 in)
1969167.6 mm (6.6 in)
1970143.1 mm (5.6 in)
197180.3 mm (3.2 in)
197266.5 mm (2.6 in)
1973116.8 mm (4.6 in)
197496.7 mm (3.8 in)
197590.9 mm (3.6 in)
197662.2 mm (2.4 in)
1977244.5 mm (9.6 in)
1978107.8 mm (4.2 in)
197999.4 mm (3.9 in)
1980118.6 mm (4.7 in)
1981194.0 mm (7.6 in)
198284.1 mm (3.3 in)
198393.0 mm (3.7 in)
1984100.6 mm (4.0 in)
1985132.5 mm (5.2 in)
1986179.5 mm (7.1 in)
198765.5 mm (2.6 in)
1988111.0 mm (4.4 in)
1989149.7 mm (5.9 in)
199075.5 mm (3.0 in)
1991239.6 mm (9.4 in)
1992105.0 mm (4.1 in)
1993186.9 mm (7.4 in)
1994157.7 mm (6.2 in)
1995110.5 mm (4.4 in)
1996139.3 mm (5.5 in)
1997102.1 mm (4.0 in)
1998160.0 mm (6.3 in)
1999104.7 mm (4.1 in)
200065.2 mm (2.6 in)
200180.5 mm (3.2 in)
200280.1 mm (3.2 in)
2003147.8 mm (5.8 in)
2004143.7 mm (5.7 in)
2005132.8 mm (5.2 in)
2006121.2 mm (4.8 in)
2007265.5 mm (10.5 in)
2008111.5 mm (4.4 in)
2009147.3 mm (5.8 in)
2010159.3 mm (6.3 in)
201162.8 mm (2.5 in)
201295.2 mm (3.7 in)
201396.6 mm (3.8 in)
2014142.2 mm (5.6 in)
2015103.9 mm (4.1 in)
2016123.4 mm (4.9 in)
2017142.2 mm (5.6 in)
2018228.4 mm (9.0 in)
2019204.8 mm (8.1 in)
2020117.4 mm (4.6 in)
202185.8 mm (3.4 in)
202348.3 mm (1.9 in)
202459.8 mm (2.4 in)
2025107.0 mm (4.2 in)
20268.9 mm (0.35 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Osawatomie by year The longest dry spell of the year at Osawatomie, 1944 to 2026. The record is 58 days in 1950, marked on the chart; the median year is 26 days. 02040601960198020002020Record: 58 days in 1950
The longest dry spell of the year at Osawatomie, 1944 to 2026. The record is 58 days in 1950, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Osawatomie by year
YearLongest dry spell (CDD)
194429 days
194521 days
194619 days
194720 days
194824 days
194928 days
195058 days
195140 days
195248 days
195329 days
195439 days
195540 days
195633 days
195721 days
195824 days
195927 days
196020 days
196125 days
196222 days
196342 days
196418 days
196528 days
196623 days
196730 days
196819 days
196930 days
197024 days
197130 days
197231 days
197323 days
197425 days
197523 days
197634 days
197733 days
197821 days
197942 days
198036 days
198121 days
198235 days
198333 days
198442 days
198521 days
198633 days
198727 days
198822 days
198945 days
199025 days
199124 days
199220 days
199324 days
199450 days
199530 days
199642 days
199724 days
199823 days
199932 days
200033 days
200133 days
200256 days
200316 days
200424 days
200521 days
200633 days
200738 days
200822 days
200940 days
201034 days
201117 days
201225 days
201322 days
201429 days
201533 days
201623 days
201735 days
201820 days
201914 days
202040 days
202120 days
202320 days
20245 days
20258 days
20263 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

71 years, 1945 to 2020

A day with at least 72.5 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 184.7 mm (7.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Osawatomie: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years72.5 mm (2.9 in)
5 years98.3 mm (3.9 in)
10 years117.0 mm (4.6 in)
25 years142.5 mm (5.6 in)
50 years163.0 mm (6.4 in)
100 years184.7 mm (7.3 in)Longer than the 71 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 71 years of values from 1945 to 2020.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 177.8 mm (7.0 in) in 1958; 177.8 mm (7.0 in) in 1981; 147.3 mm (5.8 in) in 2009.

Download the Data

  • Data for Osawatomie standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Osawatomie threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-16).